Almost one million people die worldwide by suicide each year, making it one of the leading causes of death throughout the lifespan. Suicide attempts outnumber deaths by suicide by a ratio of at least 25:1, those who attempt suicide are at high risk of later death by suicide, and suicide risk is one of the most frequent reasons for admissions to inpatient psychiatric units. Treatment of those at risk for suicide is thus a pressing priority. Research over the past two decades has led to the development of excellent empirically supported treatment methods. This book aims to increase clinicians' access to empirically supported interventions for suicidal behavior, with the hope that these methods will become the standard in clinical practice.